<?xml version="1.0"?>
<SAORecordList>
<SAORecord
FormatVersion="5.0"
StartTimeUTC="2026-02-08 -039 11:40:00.000"
URSICode="SAA0K"
StationName="SaoLuis"
GeoLatitude="-2.6"
GeoLongitude="315.8"
Source="Ionosonde"
SourceType="DPS-4"
ScalerType="auto">
<SystemInfo UMLStationID="903">
<FrequencyStepping StartFrequency="1.0" StopFrequency="18.0">
<LinearStepping Step="0.05" Units="MHz" />
</FrequencyStepping>
<RangeStepping StartRange="80.0" StopRange="1360.0" >
<LinearStepping Step="5.0" Units="km" />
</RangeStepping>
<AutoScaler Name="Artist5" Version="500200" ArtistFlags="2 2 0 0 0 0 0 0 0 11 0 0 0 0 0 0 0 0 1 0 "/>
<Comments>AR.5002.44 Confidence: 90% PACIFIC flags: One of F2 cusps was derived from the other</Comments>
<ContactPerson>
<Name>Dr. Mangalathayil Ali Abdu</Name>
<Affiliation>INPE, Division of Aeronomy</Affiliation>
<Address>Av dos Astronautas, 1.758 Jd. Granja - CEP: 12227-010 Sao Jose dos Campos - SP Brasil</Address>
<Email>maabdu@dae.inpe.br</Email>
</ContactPerson>
<StartTime Format="yyyy.MM.dd (DDD) HH:mm:ss" TimeZone="Coordinated Universal Time" >
2026.02.08 (039) 11:40:00</StartTime>
<SolarTerrestrialData>
<GyroFrequency Val="0.63" Model="IGRF 3.0" Altitude="300"/>
<DipAngle Val="-11.13" Model="IGRF 3.0" Altitude="300"/>
<DeclinationAngle Val="-19.74" Model="IGRF 3.0" Altitude="300"/>
<SunSpotNumber Val="-1.0" Status="predicted"/>
</SolarTerrestrialData>
<DigisondePreface Format="FF">
FF202603902081140009039031101000005018000000001107501000080502560000000040000
</DigisondePreface>
</SystemInfo>
<CharacteristicList Num="25" >
<URSI ID="00" Val="9.800" Name="foF2" Units="MHz" QL="/" DL="/" />
<URSI ID="03" Val="2.669" Name="M(D)" QL="/" DL="/" />
<URSI ID="07" Val="26.158" Name="MUF(D)" Units="MHz" QL="/" DL="/" />
<URSI ID="42" Val="5.150" Name="fmin" Units="MHz" QL="/" DL="/" />
<URSI ID="80" Val="5.150" Name="fminF" Units="MHz" QL="/" DL="/" />
<URSI ID="51" Val="10.250" Name="fxI" Units="MHz" QL="/" DL="/" />
<URSI ID="16" Val="280.000" Name="h`F" Units="km" QL="/" DL="/" />
<URSI ID="04" Val="280.000" Name="h`F2" Units="km" QL="/" DL="/" />
<URSI ID="90" Val="110.000" Name="hmE" Units="km" QL="/" DL="/" />
<URSI ID="83" Val="20.000" Name="yE" Units="km" QL="/" DL="/" />
<URSI ID="86" Val="0.150" Name="FF" Units="MHz" QL="/" DL="/" />
<URSI ID="88" Val="9.350" Name="fMUF" Units="MHz" QL="/" DL="/" />
<URSI ID="89" Val="470.000" Name="h`(fMUF)" Units="km" QL="/" DL="/" />
<Custom Name="dlt foF2" Val="0.000" Description="Adjustment to the scaled foF2 during profile inversion" Units="MHz" />
<Modeled Name="foEp" Val="2.877" Units="MHz" ModelName="CCIR-79" />
<URSI ID="61" Val="5.150" Name="f(h`F)" Units="MHz" QL="/" DL="/" />
<URSI ID="60" Val="5.150" Name="f(h`F2)" Units="MHz" QL="/" DL="/" />
<URSI ID="92" Val="334.291" Name="hmF2" Units="km" QL="/" DL="/" />
<URSI ID="93" Val="236.204" Name="zhalfNm" Units="km" QL="/" DL="/" />
<Modeled Name="foF2p" Val="7.108" Units="MHz" ModelName="URSI-88" ModelOptions="NoStorm" />
<URSI ID="94" Val="128.545" Name="yF2" Units="km" QL="/" DL="/" />
<URSI ID="71" Val="36.702" Name="TEC" Units="TECU" QL="/" DL="/" />
<URSI ID="09" Val="70.773" Name="scale F2" Units="km" QL="/" DL="/" />
<URSI ID="D0" Val="159.730" Name="B0" Units="km" QL="/" DL="/" />
<URSI ID="D1" Val="1.370" Name="B1" QL="/" DL="/" />
</CharacteristicList>
<TraceList Num="1">
<Trace Type="standard" Layer="F2" Polarization="O" Num="94">
<FrequencyList Type="float" Units="MHz" Description="Nominal Frequency" >
5.15 5.2 5.25 5.3 5.35 5.4 5.45 5.5 5.55 5.6 5.65 5.7 5.75 5.8 5.85 5.9 5.95 6.0 6.05 6.1 6.15 6.2 6.25 6.3 6.35 6.4 6.45 6.5 6.55 6.6 6.65 6.7 6.75 6.8 6.85 6.9 6.95 7.0 7.05 7.1 7.15 7.2 7.25 7.3 7.35 7.4 7.45 7.5 7.55 7.6 7.65 7.7 7.75 7.8 7.85 7.9 7.95 8.0 8.05 8.1 8.15 8.2 8.25 8.3 8.35 8.4 8.45 8.5 8.55 8.6 8.65 8.7 8.75 8.8 8.85 8.9 8.95 9.0 9.05 9.1 9.15 9.2 9.25 9.3 9.35 9.4 9.45 9.5 9.55 9.6 9.65 9.7 9.75 9.8
</FrequencyList>
<RangeList Type="float" Units="km" Description="Group Range" >
280.000 280.000 280.000 283.333 286.667 290.000 295.000 297.500 300.000 300.000 300.000 300.000 302.000 304.000 306.000 308.000 310.000 310.000 310.000 315.000 315.000 315.000 315.000 317.500 320.000 320.000 321.818 323.636 325.455 327.273 329.091 330.909 332.727 334.545 336.364 338.182 340.000 345.000 345.000 347.500 350.000 350.000 355.000 355.000 357.500 360.000 360.000 365.000 365.000 370.000 370.000 372.500 375.000 375.000 377.500 380.000 385.000 390.000 390.000 395.000 395.000 400.000 402.500 405.000 410.000 410.000 420.000 420.000 425.000 425.000 425.000 435.000 435.000 440.000 440.000 445.000 445.000 450.000 455.000 460.000 460.000 465.000 465.000 470.000 470.000 480.000 485.000 490.000 500.000 505.000 516.020 529.863 547.776 571.859
</RangeList>
<TraceValueList Name="Amplitude" Type="integer" Units="dB" NoValue="0" Description="Relative Amplitude" >
45 48 45 0 0 45 45 0 51 57 0 60 0 0 54 0 54 0 48 51 57 51 48 0 54 48 0 0 0 0 0 0 0 0 0 0 51 48 51 0 51 51 48 51 0 45 48 48 51 48 48 0 48 45 0 48 51 48 51 45 45 48 0 48 45 48 42 51 48 51 45 45 51 45 45 45 48 51 51 51 54 48 54 54 51 51 51 48 48 48 48 57 48 45
</TraceValueList>
<TraceValueList Name="DopplerShift" Type="float" Units="Hz" NoValue="99.0" Description="Doppler Frequency Shift" >
-1.171875 0.390625 0.390625 -0.390625 -2.734375 0.390625 2.734375 -0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 -0.390625 2.734375 0.390625 1.171875 0.390625 0.390625 0.390625 -0.390625 0.390625 2.734375 0.390625 0.390625 0.390625 0.390625 0.390625 -0.390625 0.390625 0.390625 0.390625 0.390625 -0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 -0.390625 0.390625 -0.390625 0.390625 0.390625 0.390625 0.390625 -0.390625 0.390625 -0.390625 -0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 -0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625 0.390625
</TraceValueList>
</Trace>
</TraceList>
<ProfileList Num="1">
<Profile  Algorithm="NH" AlgorithmVersion="4.33" Type="vertical" >
<Tabulated Num="188">
<AltitudeList Type="float" Units="km" Description="Altitude above station level" >
89.567 90.0 95.0 100.0 105.0 110.0 113.774 115.0 117.549 120.0 121.323 125.0 130.0 135.0 140.0 145.0 150.0 155.0 160.0 165.0 170.0 175.0 180.0 185.0 190.0 195.0 200.0 205.0 210.0 215.0 220.0 225.0 230.0 235.0 240.0 245.0 250.0 255.0 260.0 265.0 270.0 275.0 280.0 285.0 290.0 295.0 300.0 305.0 310.0 315.0 320.0 325.0 330.0 334.291 335.0 340.0 345.0 350.0 355.0 360.0 365.0 370.0 375.0 380.0 385.0 390.0 395.0 400.0 405.0 410.0 415.0 420.0 425.0 430.0 435.0 440.0 445.0 450.0 455.0 460.0 465.0 470.0 475.0 480.0 485.0 490.0 495.0 500.0 505.0 510.0 515.0 520.0 525.0 530.0 535.0 540.0 545.0 550.0 555.0 560.0 565.0 570.0 575.0 580.0 585.0 590.0 595.0 600.0 605.0 610.0 615.0 620.0 625.0 630.0 635.0 640.0 645.0 650.0 655.0 660.0 665.0 670.0 675.0 680.0 685.0 690.0 695.0 700.0 705.0 710.0 715.0 720.0 725.0 730.0 735.0 740.0 745.0 750.0 755.0 760.0 765.0 770.0 775.0 780.0 785.0 790.0 795.0 800.0 805.0 810.0 815.0 820.0 825.0 830.0 835.0 840.0 845.0 850.0 855.0 860.0 865.0 870.0 875.0 880.0 885.0 890.0 895.0 900.0 905.0 910.0 915.0 920.0 925.0 930.0 935.0 940.0 945.0 950.0 955.0 960.0 965.0 970.0 975.0 980.0 985.0 990.0 995.0 1000.0
</AltitudeList>
<ProfileValueList Name="PlasmaFrequency" Type="float" Units="MHz" Description="Plasma frequency" >
0.2 0.235 1.934 2.49 2.784 2.877 2.755 2.755 2.755 2.834 2.877 3.023 3.203 3.372 3.537 3.7 3.864 4.029 4.197 4.366 4.538 4.712 4.888 5.066 5.246 5.427 5.609 5.791 5.974 6.157 6.34 6.522 6.705 6.886 7.067 7.247 7.426 7.604 7.781 7.957 8.132 8.305 8.477 8.646 8.812 8.975 9.132 9.282 9.422 9.548 9.654 9.736 9.786 9.8 9.8 9.794 9.779 9.755 9.723 9.683 9.636 9.583 9.522 9.456 9.384 9.306 9.224 9.137 9.047 8.952 8.854 8.753 8.649 8.542 8.434 8.323 8.211 8.097 7.982 7.866 7.749 7.632 7.514 7.396 7.278 7.159 7.041 6.924 6.807 6.69 6.574 6.458 6.344 6.23 6.118 6.006 5.896 5.786 5.678 5.571 5.466 5.361 5.259 5.157 5.057 4.958 4.861 4.765 4.671 4.578 4.486 4.396 4.308 4.221 4.135 4.051 3.968 3.887 3.807 3.729 3.652 3.576 3.502 3.429 3.358 3.287 3.219 3.151 3.085 3.02 2.957 2.894 2.833 2.773 2.714 2.657 2.6 2.545 2.491 2.438 2.386 2.335 2.285 2.236 2.188 2.141 2.095 2.05 2.006 1.963 1.921 1.879 1.839 1.799 1.76 1.722 1.685 1.649 1.613 1.578 1.544 1.511 1.478 1.446 1.415 1.384 1.354 1.325 1.296 1.268 1.24 1.213 1.187 1.161 1.136 1.111 1.087 1.063 1.04 1.018 0.996 0.974 0.953 0.932 0.912 0.892 0.872 0.853

</ProfileValueList>
</Tabulated>
<ShiftedChebyshevList Num="2" >
<ShiftedChebyshev Region="E" StartFrequency="0.2" EndFrequency="2.877" PeakHeight="110.0" Num="3" Error="0.0">
-30.09 12.548 -2.891
</ShiftedChebyshev>
<ShiftedChebyshev Region="F2" StartFrequency="2.877" EndFrequency="9.8" PeakHeight="334.291" Num="5" zHalfNm="236.204" Error="2.735">
-186.932 -39.506 16.212 -4.343 1.601
</ShiftedChebyshev>
</ShiftedChebyshevList>
<ProfileValley Model="ULCAR" Width="11.323" Depth="0.122"/>
<TopsideChapman PeakHeight="334.291" PeakDensity="1191563.2" PeakScaleHeight="70.773" />
</Profile>
</ProfileList>
</SAORecord>
</SAORecordList>
